dc.contributor.author | Redhammer, Günther J. | |
dc.contributor.author | Tippelt, Gerold | |
dc.contributor.author | Portenkirchner, Andreas | |
dc.contributor.author | Rettenwander, Daniel | |
dc.date.accessioned | 2022-02-17T10:29:20Z | |
dc.date.available | 2022-02-17T10:29:20Z | |
dc.date.created | 2021-12-14T15:06:59Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Crystals. 2021, 11 (7), . | en_US |
dc.identifier.issn | 2073-4352 | |
dc.identifier.uri | https://hdl.handle.net/11250/2979633 | |
dc.description.abstract | Li7La3Zr2O12 garnet (LLZO) belongs to the most promising solid electrolytes for the development of solid-state Li batteries. The stability of LLZO upon exposure to air is still a matter of discussion. Therefore, we performed a comprehensive study on the aging behavior of Al-stabilized LLZO (space group (SG) Ia3¯d) and Ga-stabilized LLZO (SG I4¯3d) involving 98 powder and 51 single-crystal X-ray diffraction measurements. A Li+/H+ exchange starts immediately on exposure to air, whereby the exchange is more pronounced in samples with smaller particle/single-crystal diameter. A slight displacement of Li from interstitial Li2 (96h) toward the regular tetrahedral Li1 (24d) sites occurs in Al-stabilized LLZO. In addition, site occupancy at the 96h site decreases as Li+ is exchanged by H+. More extensive hydration during a mild hydrothermal treatment of samples at 90 °C induces a structural phase transition in Al-LLZO to SG I4¯3d with a splitting of the 24d site into two independent tetrahedral sites (i.e., 12a and 12b), whereby Al3+ solely occupies the 12a site. Li+ is preferably removed from the interstitial 48e site (equivalent to 96h). Analogous effects are observed in Ga-stabilized LLZO, which has SG I4¯3d in the pristine state. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | MDPI | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Aging behavior of al- and ga- stabilized li7la3zr2o12 garnet-type, solid-state electrolyte based on powder and single crystal x-ray diffraction | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 23 | en_US |
dc.source.volume | 11 | en_US |
dc.source.journal | Crystals | en_US |
dc.source.issue | 7 | en_US |
dc.identifier.doi | 10.3390/cryst11070721 | |
dc.identifier.cristin | 1968459 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |